Page 145 of Mr.Gasket Performance Gaskets & Accessories by Prestolite Performance

gaskets intake gasket specifications and modified port applications chevrolet big block v-8 stock and performance cylinder heads conventional port and bolt hole locations engine cid 396-454 gen iv 396-454 gen iv 396-454 gen iv 396-454 gen iv 454 gen v engine liters 6.5-7.4 6.5-7.4 6.5-7.4 6.5-7.4 7.4 cyl 8 8 8 8 8 years 1965-90 1965-90 1965-90 1965-90 1991-95 description 1/16 thick 1/8 thick 1/16 thick 1/8 thick 1/16 thick application oval stock port oval stock port rect stock port rect stock port oval stock port port dimensions 1.75w x 2.16h 1.75w x 2.16h 1.75w x 2.50h 1.75w x 2.50h 1.75w x 2.00h perf 107 117 108 110 5828 5818 4672g 4671g intake set ultra ultra seal seal iii 5827 4670g performance cylinder heads non-conventional port and bolt hole locations engine cid 396-454 gen iv 396-454 gen iv 396-454 gen iv 396-454 gen iv 396-454 gen iv 396-454 gen iv 396-454 gen iv 396-454 gen iv engine liters 6.5-7.4 6.5-7.4 6.5-7.4 6.5-7.4 6.5-7.4 6.5-7.4 6.5-7.4 6.5-7.4 cyl 8 8 8 8 8 8 8 8 years 1965-90 1965-90 1965-90 1965-90 1965-90 1965-90 1965-90 1965-90 description 1/16 thick 1/8 thick 1/16 thick 1/16 thick 1/16 thick 1/8 thick 1/16 thick 1/8 thick application rect raised port rect raised port dart big chief dart big m rect raised port rect raised port pontiac super duty brodix big duke pontiac super duty duty brodix big duke port dimensions 1.85 w x 2.55h 1.85 w x 2.55h 1.83w x 2.43h 1.84w x 2.80h 1.86w x 2.83h 1.86w x 2.83h 1.78w x 2.45h spread port 1.78w x 2.45h spread port perf 121 122 420 425 127 128 510 511 intake set ultra ultra seal seal iii 5817 5819 4675g note intake gaskets listed above fit aftermarket intake manifolds without upper mounting bolt holes 5827 143

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